单项选择题

Which of the following cannot be used to explain what a theory is like

A．An account of the properties that a theory has.
B．A description of various features that a theory may have.
C．A detailed account of the features of the theory's content and form.
D．An introduction to the contributions made by Einstein to scienc

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单项选择题

In the last paragraph the author cites the example of beautiful peacocks with gorgeous tails to mean ______.

A．a female who favors cute clothes
B．a male who likes cute clothes
C．an animal that favors many friends
D．a male who is cute but not rich

单项选择题

Which of the following is a most likely meaning for the word bonobo in the first paragraph

A．A species of wild horses.
B．A species of chimpanzee.
C．A species of giraffes.
D．A species of tigers.